Closure phase in high-resolution optical imaging

@article{Baldwin1986ClosurePI,
  title={Closure phase in high-resolution optical imaging},
  author={J. E. Baldwin and Christopher A. Haniff and Craig Mackay and Peter J. Warner},
  journal={Nature},
  year={1986},
  volume={320},
  pages={595-597}
}
The angular resolution of long-exposure optical images taken with large telescopes at the best sites is limited by atmospheric phase fluctuations to ∼0.5–1 arc s; that is, ∼10–50 times worse than the theoretical diffraction limit. In contrast, the measurement of visibilities and closure phases of fringe patterns in short-exposure images, taken through an aperture mask comprising a non-redundant array of three or more holes, offers the prospect of reliable diffraction-limited imaging using… 
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